应用热压计算纯有机物质的汽化热

CALCULATION OF VAPORIZATION-HEAT OF PURE ORGANIC SUBSTANCES BY USING THERMAL PRESSURES

本文应用热力学基本定律建立了汽化热与热压的关系，然后把立方型状态方程引入上述关系式，从而导出可推算各种物质汽化热的通用公式。本文应用该公式对３２种常用的物质（其中包括强极性，氢键缔合物质，如醇类等）的汽化热进行计算，并与实验数据进行比较，总的平均误差为 １５５％。

Based on the thermodynamic theory of thermal pressure, the general equa tions for vaporization-heat of pure substances was derived, and then used to calculate the vaporization- heat data for thirty-two substances, including some strongly polar compounds, such as methanol, ethanol and ethylic acid etc. The agreement between calculated and ex perimental data were quite satisfactory. It shows that the new equation of vaporization-heat herein is well suited to describe the property of vapor-liquid phase change.